a distant large asteroid is detected that might pose a threat to earth. if it were to continue moving in$.$ straight line at a constant speed, it would pass $25500$ km from the center of earth. however, it will be attracted to earth and might hit our planet. what is the minimum speed in m$/$s that the asteroid should have when it is detected for it to miss hitting earth, in other words what speed should the asteroid have for it to just barely gra$3$ the surface of earth $,$ initial posterior energy can be $0$